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鹽城工學院本科生畢業(yè)設計說明書 2007
FXS900組合式選粉機總體及雙出風口分離器設計
摘要：選粉機是圈流粉磨系統(tǒng)的主要設備之一，通過選粉機對粉末粒徑的選擇，能夠很大程度上減少細粉重新進磨，解決對粗粉粉磨的緩沖作用問題，從而提高粉磨效率，進而提高了能源利用率。本課題設計的是FXS900組合式選粉機，它是在旋風式選粉機的基礎上進行改進而成的一種高效旋粉機。該設計吸收了O-SEPA選粉機的的先進懸浮分散技術和平面渦流理論，并在選粉機主體四周設有旋風筒來收集細粉。設計內(nèi)容分為選粉機總體設計和雙出風口分離器的設計。在進行總體設計時，通過風量的計算選擇風機，確定旋粉室直徑與轉(zhuǎn)子直徑，再計算主軸的轉(zhuǎn)速和選粉機的功率，選擇電機和減速機。雙出風口分離器的設計是我此次設計的重點。雙出風口分離器的結(jié)構設計主要是在單出風口分離器的基礎上改進而來。傳統(tǒng)的旋風分離器存在下述三個主要缺陷：
a．旋風分離器中心凈化氣流是一股較強的旋渦流無用壓力損失占分離器總壓力損失65%以上。
b．在上進風口與上出風口間存在短路流。
c．錐部集料口因氣流轉(zhuǎn)向而導致已沉降微細粉塵“二次返混”。
通過在筒體內(nèi)增設可調(diào)節(jié)開度的導流口，改善了旋風分離器內(nèi)的流場，使得分離器的捕集細粉能力有了顯著的提高，為現(xiàn)行組合式選粉機改造拓展了市場。
關鍵詞：選粉機，雙出風口分離器，圈流粉磨 ，平面渦流
The Design of FXS900 Combination Separator and Cyclone Collector with Double Outlet for Dust
Abstract: The separator is a major equipment of the circle grinding system. Through the separator’s choice of the size of the power, it reduces the chance that thin power return to the ball mill, solves the problem of buffer action to the thick power grinding, enhances the grinding rate, and improves the energy efficiency. This graduated course is the design of FXS900 combination separator. It is a high efficiency separator, which is based on the cyclone separator. This design absorbed the advanced Suspension Technology Plane Vortex Technology of O-SEPA separator, and also absorbed Cyclones Collecting Technology of cyclone separator .And around the separator, there are a fewer of cyclone collectors which are used to collect the thin power. The contents of this design are overall design of FXS900 combination separator and design of Cyclone Collector with Double Outlet for Dust . In the design of the separator, at first, calculate the air amount choose the air fan ,then confirm the diameters of the dust separator room and rotor. After calculate the rotor speed of main shaft and the power capacity, choose the electromotor and decelerate machine. The cyclone collector’s design is the point of my design. Design of the structural of the cyclone collector with double outlet for dust is based on the traditional cyclone collector. There are three imperfections on the traditional cyclone collector:
a. The airflow in the center of the cyclone collector is a strong swirling flow. The uselessness gas pressure loss is 65% of the total loss.
b. Between the upper air import and outlet ,there is a short-circuit faultc.
c. The air-flow at the outlet of dust steer and bring on the micro dust which has ground settlement mixes again. Increase an adjustable opening degree construction diversion in the barrel part .It improves the stream field and the ability of catching the micro dust. It expands the market for existing Combination Separator.
Key words: separator; cyclones separator with Double Outlet for Dust; circle grinding system; plane eddy